<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <ul>
            <li v-for="v of names">{{ v }}</li>
        </ul>
        <button @click="fn">走一走</button>
    </div>
    <script src="../vue.js"></script>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                names: ['帅哥','美女','程序猿']
            },
            methods: {
                fn() {
                    // console.log(this.names.push())
                    this.names.push(this.names.shift())
                }
            }
        })

    </script>
</body>

</html>